Roth sold the film rights to The Divergent Series to Summit Entertainment. Filming of Divergent, the adaptation of the first book in the series, was started in April 2013, and the film was released in March 2014. On March 21, 2014, Lionsgate officially greenlit the film adaptation of Insurgent. The film was released on March 20, 2015. On April 11, 2014, Summit Entertainment announced that the third book, Allegiant, would be split into two films, part 1 and part 2. Former Part 1 is called The Divergent Series: Allegiant, and was released on March 18, 2016, and former Part 2 is named The Divergent Series: Ascendant, and was scheduled to be released on March 24, 2017. The theatrical release for Ascendant was cancelled in favor of it being a television film and spinoff series. The television film and spinoff series were later cancelled.
She wrote four short stories from Tobias Eaton's point of view. The Transfer is the first of four short stories, which tells some of Tobias's life prior to Divergent. It was released on September 3, 2013. The second story is titled The Initiate. The stories are sold separately as e-books and also bound together under the title Four: A Divergent Story Collection. The last two short stories of Tobias's stories are titled The Son and The Traitor. The story collection was published in several forms in July 2014. The novella Free Four: Tobias Tells the Story chapter thirteen of Divergent in Tobias's point of view, and was released for Kindle in 2012 in the United States and in 2013 in the UK.